ZIP 03046 (Dunbarton, NH) truck route planning & crash data
Plan safer truck routes around ZIP 03046: commercial truck and garbage truck crashes here and in Merrimack County, dangerous roads, seasonality and route safety data for fleets.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
0.0 deaths per 100 garbage-truck crashes vs 3.0 for all trucks.
Deadliest roads
How Merrimack County compares with New Hampshire
Merrimack County against New Hampshire and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Merrimack County stands out
Full comparison
| Measure (2015–2025) | Merrimack County | New Hampshire | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 42.2 | 30.4 | 49.7 | 1.4× the state |
| Deaths per 100 crashes | 3.0 | 2.6 | 3.4 | 1.2× the state |
| Injuries per crash | 0.37 | 0.39 | 0.49 | same |
| Garbage-truck share | 2.9% | 4.2% | 2.3% | 31% below the state |
| On snow, slush or ice | 23.5% | 20.2% | 6.2% | 1.2× the state |
| Morning rush (6–10 am) | 29.8% | 29.3% | 23.7% | same |
| In rain, sleet or snow | 24.6% | 22.8% | 13.8% | 1.1× the state |
| Winter months (Nov–Mar) | 47.4% | 47.6% | 41.9% | same |
| After dark | 17.1% | 16.3% | 24.8% | same |
Merrimack County has lower values than New Hampshire for garbage-truck share. It stands out for higher crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice.
The headline for Merrimack County: February the month with the most truck crashes: 12.5% of the year's total.
Overview
Merrimack County has recorded 761 truck crashes since 2015, with 277 people injured and 22 killed.
Across the years with complete reporting, that is roughly one truck crash every 5 days.
When crashes happen
Truck crashes peak in February (12.5% of the year) and are lowest in May (6.6%).
Winter months (Nov–Mar) carry 47.4% of truck crashes, vs 47.6% for New Hampshire.
More truck crashes happen at 10–11 am than at any other hour (8.5%).
Road surface: 23.5% of truck crashes were on snow, slush or ice (New Hampshire: 20.2%).
Where crashes happen
Fatal large-truck crashes within 10 miles of ZIP 03046 since 2015 were spread across roads: I-93 (3) and SR-3A (1).
Garbage & waste trucks
Garbage and refuse trucks were involved in 21 crashes, 2.8% of the total, against 4.2% across New Hampshire.
The most garbage-truck crashes happen in July (24%).
They recorded 0.0 deaths per 100 crashes, against 3.0 for all trucks.
Route planning tips for ZIP 03046 fleets
- Review driver schedules for February, the month with the most truck crashes.
- Garbage-truck crashes here peak in July; review collection routes for that month.
- With 23.5% of truck crashes on snow, slush or ice (above New Hampshire), plan winter equipment checks early.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
About the data
Crash counts come from the FMCSA crash file (police-reported crashes involving trucks over 10,000 lb); fatal-crash locations come from NHTSA FARS. Text on this page states only what these numbers show.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Merrimack County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-93 | 3 |
| SR-3A | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Merrimack County) |
|---|---|
| SR-3A | 9 |
| Dover Rd | 9 |
| N/Everett Tpk | 5 |
| Manchester St | 4 |
| N & Exit 3 | 4 |
| Hooksett Rd | 3 |
| I 89 N Mm 28.6 | 3 |
| I 89 S Mm 21.8 2 Miles N Of Exit 9 | 3 |
ZIP 03046 at a glance
| Population | 3,097 |
| Density | 39 per sq mi |
| Median household income | $124,348 |
| Median home value | $474,991 |
| Home ownership | 95% |
Waste facilities and haulers nearby
Historical data: truck crashes in Merrimack County since the 1990s
Combines the FMCSA crash file (all reported truck crashes, real coverage from about 1990) with NHTSA FARS (fatal crashes involving a large truck, 1982–2024).
| Decade | Truck crashes / yr | Change | Fatal crashes / yr (FARS) |
|---|---|---|---|
| 1990s | 33 | — | 0.8 |
| 2000s | 49 | +46% | 1.8 |
| 2010s | 58 | +20% | 1.0 |
| 2020s | 64 | +9% | 1.6 |
In the 1990s about 33 truck crashes a year were reported; in the 2020s, about 64. Reporting coverage also changed between these periods. Fatal crashes involving a large truck averaged 1.8 a year in 2016–19 and 1.6 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 03046
How many truck crashes happen in ZIP 03046?
Since 2015, 761 crashes involving commercial trucks were reported in Merrimack County (277 injured, 22 killed).
When do most truck crashes happen in ZIP 03046?
The worst month is February: 12.5% of truck crashes in Merrimack County happen then.
Are garbage truck crashes common in ZIP 03046?
21 crashes involving garbage or refuse trucks have been reported in Merrimack County since 2015, 2.8% of all truck crashes.
What is the truck crash rate in ZIP 03046 compared with New Hampshire?
The yearly rate is 42.2 truck crashes per 100,000 residents in Merrimack County, vs 30.4 for New Hampshire.
What is the best way to plan truck routes in ZIP 03046?
Paste your stops into the free CurbWaste Route Planner: it scores your route against fatal-crash locations, suggests safer alternatives and flags low bridges.
2026 is a partial year. Updated October 2026.